red forest

Short definition from Wiktionary

Noun

1. 1
   A forest (group of domains) having high security and limited access, used for administrative purposes.
2. 2
   A forest that has died, leaving reddening foliage and trees: A forest contaminated with nuclear fallout.
3. 3
   A forest that has died, leaving reddening foliage and trees: A forest killed by an infestation of mountain pine beetle.

Proper noun

1. 1
   A red forest in Chernobyl Exclusion Zone, Vyshhorod Raion, Kyiv Oblast, Polesia, Ukraine; a highly radioactive and highly contaminated pine forest caused by fallout from the Chornobyl-Vladimir Lenin nuclear power plant meltdown disaster accident.